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Quality Control in DST results interpretation
Learning ObjectivesQC aspects in FL and SL LQ DST result interpretation
Quality Control of DST is critical to ensure the test is functioning properly so that reliable results can be interpreted.
Steps in Quality Control in DST result interpretation include:
1. SIRE/ Second- line and PZA QC
- Carefully entering the tubes into MGIT 960
- Carefully scanning the DST set carrier into the BACTEC MGIT 960 instrument.
2. Interpretation of results
- The time period to interpret results is crucial. Interpret between 4–13 days for first and second-line drugs and 4-21 days for PZA.
- Results should read susceptible for all drugs.
- If proper results are not obtained, repeat the test.
3. First and Second- line drugs and PZA QC Records
- Record lot numbers of MGIT 960 tubes, drugs and drug supplements.
- Record QC results.
- Maintain records for a minimum of five years.
Resource
GLI Practical Guide to TB Laboratory Strengthening
Assessment
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Question
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Answer 1
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Answer 2
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Answer 3
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Answer 4
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Correct answer
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Correct explanation
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Part of Pre-test
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Part of Post-test
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Quality control in DST result interpretation includes which of the following?
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Interpret the results between 4–13 days for first and second-line drugs and 4-21 days for PZA.
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Ensure proper reconstitution of lyophilized drugs.
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Use calibrated pipette.
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Use control strains and reagents, |
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Interpret the results between 4–13 days for first and second-line drugs and 4-21 days for PZA.
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YES
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YES
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